A motorist pumps fuel into his vehicle at JJ's Express Gas Plus station in Phoenix gas station in Phoenix
A motorist pumps fuel into his vehicle at JJ's Express Gas Plus station in Phoenix gas station in Phoenix, Arizona August 10, 2011. REUTERS

U.S. retail gasoline prices fell 2.3 cents to $3.58 a gallon during the last week, the third consecutive drop this month, the U.S. Energy Department said.

The national price for regular unleaded gasoline remained 87.7 cents higher than it was a year ago, the department said.

This is the third week in a row that gasoline prices have declined, following five weeks of increases.

Oil prices, which account for about 65 percent of the cost of making gasoline, traded up $1.86 on the New York Mercantile Exchange to settle at $84.12 a barrel on Monday.

While oil prices have begun to recover from their steep slide at the beginning of August, they remain well below levels around $100 a barrel hit last month.

Diesel prices fell 2.5 cents week-on-week to $3.81 a gallon, though that was still up 85.3 cents from a year ago, the department said.